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| 关于辉钼矿中Re含量示踪来源的讨论 | |
| 引用本文： | 杨宗锋,罗照华,卢欣祥,程黎鹿,黄凡.关于辉钼矿中Re含量示踪来源的讨论[J].矿床地质,2011,30(4):654-674. |
| 作者姓名： | 杨宗锋 罗照华 卢欣祥 程黎鹿 黄凡 |
| 作者单位： | 1. 中国地质大学地质过程与矿产资源国家重点实验室,北京,100083 2. 河南省国土资源科学研究院,河南郑州,450053 3. 中国地质科学院,北京,100037 |
| 基金项目： | 本文得到河南省地质矿产重大科技攻关计划项目(编号：26417)和国家自然科学基金对外交流与合作项目（编号：40911120079，RFBR-GFEN08-05-92224）的资助 |
| 摘 要： | 对近年来国内已发表的744个辉钼矿Re-Os同位素测年数据进行了汇总,发现所有样品辉钼矿中的Re含量具有混合分布的特征.按照岩性和共生矿物种类对所有数据进行了分类统计分析,结果显示辉钼矿中Re含量(质量分数,下同)与岩性和共生矿物种类存在密切的关系:长英质脉和花岗岩中辉钼矿的Re含量最低,几何平均值分别为7.41×10... |
| 关 键 词： | 地质学 辉钼矿 Re含量 混合分布 成矿物质来源 共生矿物 岩性 |
Discussion on significance of Re content of molybdenite in tracing source of metallogenic materials |
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| YANG ZongFeng,LUO ZhaoHua,LU XinXiang,CHENG LiLu,HUANG Fan.Discussion on significance of Re content of molybdenite in tracing source of metallogenic materials[J].Mineral Deposits,2011,30(4):654-674. | |
| Authors: | YANG ZongFeng LUO ZhaoHua LU XinXiang CHENG LiLu HUANG Fan |
| Institution: | YANG ZongFeng1,LUO ZhaoHua1,LU XinXiang2,CHENG LiLu1,HUANG Fan3(1 State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China,2 Research Institute of Land and Resources,Zhengzhou 450053,Henan,3 Chinese Academy of Geological Sciences,Beijing 100037,China) |
| Abstract: | 744 pieces of molybdenite Re_Os isotopic dating data published in China in recent years were collected and the authors found that the Re content of all the samples is characterized by mixed distribution. Classification and statistical analysis of all the data were based on the lithology and associated mineral types. The results show that the Re content of molybdenite has a close relationship with the lithology and associate minerals, i.e., pure molybdenite in the felsic veins and granite has the lowest Re content with the geometric mean of 7.41×10-6 and 7.99×10-6 respectively, and most of the values range from n×10-6 to n×10-5; the Re content of pure molybdenite in the skarn is medium with the geometric mean of 58.1×10-6, and most of the values range from n×10-5 to n×10-4; molybdenite in the carbonatite has the highest Re content with the geometric mean of 231×10-6, and most of the values are n×10-4. The Re content of molybdenite is also affected by its associated mineral type: the Re content of molybdenite has the lowest value when molybdenite is only associated with scheelite (or wolframite) and/or galena, sphalerite, native gold and native silver with the geometric mean of n×10-7, and most of the values range from n×10-8 to n×10-6; when it is only associated with chalcopyrite and/or magnetite (or pyrrhotine), the molybdenite has the highest Re content with the geometric mean of n×10-4, and most of the values range from n×10-5 to n×10-3; the medium Re content occurs when molybdenite is associated with chalcopyrite ( magnetite or pyrrhotine) and scheelite (or wolframite, galena, sphalerite, native gold and native silver) with the geometric mean of n×10-6, and most of the values range from n×10-7 to n×10-5 A comprehensive analysis shows that molybdenite associated with scheelite (or wolframite, galena, sphalerite, native gold and native silver) or produced in the felsic veins and granite may reduce the Re content, whereas molybdenite associated with chalcopyrite and/or magnetite (or pyrrhotine) or produced in the skarn and carbonatite may increase the Re content. The magnitude changes of Re content may be related to the modes of occurrence of molybdenite in combination with the contradiction of isotopic tracing between the Re content of molybdenite and other isotopic methods published in recent years. It seems that the magnitude changes of Re content of molybdenite could not effectively represent the source of metallogenic material. |
| Keywords: | geology molybdenite Re content mixed distribution source of metallogenic material associated mineral lithology |
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